稀有金属材料与工程最新文献_第9页

Microstructure and Tribological Properties of CrN Films Deposited by Direct Current Magnetron Sputtering 直流磁控溅射沉积CrN薄膜的微观结构和摩擦学性能

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-08-01 DOI: 10.1016/S1875-5372(18)30180-2

Ren Xingrun , Zhang Qinying , Huang Zhu , Su Wei , Yang Jiangao , Chen Hao

{"title":"Microstructure and Tribological Properties of CrN Films Deposited by Direct Current Magnetron Sputtering","authors":"Ren Xingrun , Zhang Qinying , Huang Zhu , Su Wei , Yang Jiangao , Chen Hao","doi":"10.1016/S1875-5372(18)30180-2","DOIUrl":"10.1016/S1875-5372(18)30180-2","url":null,"abstract":"<div><p>CrN films were deposited on 304 stainless steel by DC reactive magnetron sputtering. The effects of nitrogen flow on the microstructure, mechanical and tribological properties were characterized by X-ray diffraction, scanning electron microscopy, atom force microscope, microhardness, wear tester and Nanomap 500LS profile. The results show that with the increase of nitrogen flow, the CrN films exhibit a preferential orientation in the (200) direction. The deposition rate of CrN films decreases with the increase of nitrogen flow. Besides, the surface roughness decreases first and then increases with further increase of nitrogen flow. As nitrogen flow increases from 15 cm<sup>3</sup>/min to 30 cm<sup>3</sup>/min, microhardness HV is improved from 5273 MPa to 10422 MPa, and then decreases to 9180 MPa when the nitrogen flow further increases to 35 cm<sup>3</sup>/min. Wear test results show that the CrN films deposited at nitrogen flow of 30 cm<sup>3</sup>/min achieve minimum friction coefficient value of 0.93 and wear rate 2.02×10<sup>−15</sup> m<sup>3</sup>·(N·m)<sup>−1</sup>, which present best wear resistance performance.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 8","pages":"Pages 2283-2289"},"PeriodicalIF":0.7,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30180-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89709433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Effects of Hot-rolling Reduction on Microstructure and Mechanical Properties of GNPs/Ti Composites 热轧压下对GNPs/Ti复合材料组织和力学性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-08-01 DOI: 10.1016/S1875-5372(18)30184-X

Wu Yan, Zhang Hongmei, Cai Hongnian, Fan Qunbo, Mu Xiaonan

引用次数: 5

Strontium-doped Hydroxyapatite Coatings Deposited on Mg-4Zn Alloy: Physical-chemical Properties and in vitro Cell Response Mg-4Zn合金表面掺杂锶羟基磷灰石涂层:理化性质及体外细胞反应

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-08-01 DOI: 10.1016/S1875-5372(18)30194-2

Shi Wei , Zhao Dapeng , Shang Peng , Nie Hemin , Zhang Yuan , Tang Jincheng

{"title":"Strontium-doped Hydroxyapatite Coatings Deposited on Mg-4Zn Alloy: Physical-chemical Properties and in vitro Cell Response","authors":"Shi Wei , Zhao Dapeng , Shang Peng , Nie Hemin , Zhang Yuan , Tang Jincheng","doi":"10.1016/S1875-5372(18)30194-2","DOIUrl":"10.1016/S1875-5372(18)30194-2","url":null,"abstract":"<div><p>Biodegradable magnesium (Mg)-based biomaterials have draw extensively attention, due to the high strength-to-weight ratio, low elastic modulus and good biocompatibility. However, the high corrosion rate is still a major obstacle for the potential clinical applications. Therefore, the highly biocompatible hydroxyapatite (HA) coatings are usually introduced to restrain the interactions between Mg-based substrate and the body fluid environment. In the present paper, HA and strontium (Sr)-doped HA coatings were prepared on Mg-4Zn substrates by electrochemical deposition. The surface properties of the samples were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), three-dimensional laser scanning microscopy (3D LSM) and a contact angle video system. The dynamic ion release, protein adsorption, cell adhesion, proliferation and differentiation behavior of the samples were also evaluated. The results reveal that the incorporation of Sr in the HA coatings leads to lattice distortion and decreased crystallinity. The smaller amount of Mg ion release of the Sr-doped HA coated samples suggests a better corrosion resistance. The improved protein adsorption and initial adhesion of mesenchymal stem cells (MSCs) of the Sr-doped samples should be due to their higher surface roughness and wettability. The introduction of Sr leads to comparable cell proliferation behavior, but significantly improved osteogenic differentiation. It is concluded that the Sr-doped HA coatings are promising candidates for the protective biocompatible coating on Mg-based implants.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 8","pages":"Pages 2371-2380"},"PeriodicalIF":0.7,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30194-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87725835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Effect of Ag Content and β-PbO2 Plating on the Properties of Al/Pb-Ag Alloy 银含量及镀β-PbO2对Al/Pb-Ag合金性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30171-1

Z. Xiangyang, W. Shuai, Ma Chiyuan, Long Bo, W. Hui, Yang Juan, Guo Zhongcheng, Chen Buming

引用次数: 2

Interfacial Reaction Between Mg-40Al and Mg-20Ce Using Liquid-Solid Diffusion Couples 用液-固扩散偶研究Mg-40Al和Mg-20Ce的界面反应

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30178-4

Dai Jiahong, Xie Hongmei, Jiang Bin, P. Cheng, Jiang Zhongtao, Yang Qingshan, Pan Fusheng

引用次数: 1

Corrosion Behavior of P110 Tubing Steel in the CO2-saturated Simulated Oilfield Formation Water with Element Sulfur Addition 添加元素硫后P110油管钢在co2饱和模拟油田地层水中的腐蚀行为

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30166-8

Miao Jian , Yuan Juntao , Han Yan , Xu Xiuqing , Li Lei , Wang Ke

引用次数: 12

Structure and Thermal Properties of Layered Ti-clad Diamond/Cu Composites Prepared by SPS and HP SPS和HP制备层状ti包覆金刚石/Cu复合材料的结构和热性能

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30173-5

Wang Yunlong , Duan Kaiyue , Wang Kaikun , Dai Zhigang , Xue Zhihong

引用次数: 5

FeGaB(25 nm)/Al2O3/FeGaB(25 nm) Multilayer Structures: Effects of Variation of Al2O3Thickness on Static and Dynamic Magnetic Properties FeGaB(25nm)/Al2O3/FeGaB(25nm)多层结构:Al2O3厚度变化对静态和动态磁性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30164-4

S. Imran, Yingz. Ge, Yuan Jun, Ma Yungui, He Sailing

引用次数: 6

Effect of Volume Fraction on the Coarsening of Pb Nanophase in Al-Pb Nanocomposite Alloys Prepared by High Energy Ball Milling 体积分数对高能球磨制备Al-Pb纳米复合合金中Pb纳米相粗化的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30170-X

Wu Zhifang, Wu Jiang, Z. Lei, W. Run, Chang Qing-ming

引用次数: 0

Synthesis and Characterization of WC-6Co Nanocrystalline Composite Powder WC-6Co纳米晶复合粉体的合成与表征

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30169-3

Guo Shengda , Shen Tao , Bao Rui , Yang Jiangao , Yi Jianhong

{"title":"Synthesis and Characterization of WC-6Co Nanocrystalline Composite Powder","authors":"Guo Shengda , Shen Tao , Bao Rui , Yang Jiangao , Yi Jianhong","doi":"10.1016/S1875-5372(18)30169-3","DOIUrl":"https://doi.org/10.1016/S1875-5372(18)30169-3","url":null,"abstract":"<div><p>WC-6Co nanocrystalline composite powders without excess C and decarburization phases were synthesized via a facile route including spraying conversion, calcination and in situ reduction-carbonization processes. The phase constituents obtained by XRD show that the as-prepared powders after each step of the preparation are amorphous, WO<sub>3</sub> and Co<sub>3</sub>O<sub>4</sub> phases, WC and Co phases, respectively. Pure WC-Co composite powders could be obtained by a reduction-carbonization process heat treated at 900 °C for 1 h under a hydrogen atmosphere due to the catalytic effect of Co on the carbonation reaction. The effects of heat treatment temperature on phase constituents of powders were investigated in a range of 700∼900 °C. Morphology and microstructure of powders were observed by SEM and HRTEM. The results indicate that the morphology of powder is spherical. The grain size of WC is about 0.36 μm, and the crystalline size of WC is about 56 nm, which indicates that the WC grain is polycrystalline and composed of many crystallites. It is also found that the individual particles of WC are bonded together under the action of Co. Furthermore, a few sintering necks could be observed in the composite powders due to the contacts between WC particles. The stoichiometry of WC-Co composite powders could be adjusted easily. Moreover, the formation process and mechanism of the sphere structure were also discussed in this paper.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1986-1992"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30169-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91667992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8